Biopsy, Fibromax and NAFLD score Improvement in liver injury will be defined by reduction of fibrosis, steatosis and inflammation in liver biopsy and noninvasive tests Fibromax test and NAFLD score of varying degrees. NAFLD score and the FibroMax ™ test (Biopredictive, Paris, France), which evaluates fibrosis, inflammation and hepatic steatosis. Sensitivity, specificity, positive and negative predictive values will be assessed for comparison of these non-invasive fibrosis assessment methods with liver biopsy. Hepatic transaminases (AST, ALT) will be assessed as well.